The Rio Grande Rise – a detached microcontinent or a large igneous province?

Tabea Altenbernd, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Geophysics, Bremerhaven, Germany, Wilfried Jokat, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany and Wolfram H. Geissler, AWI Bremerhaven, Bremerhaven, Germany